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An electron, in a hydrogen like atom , i...

An electron, in a hydrogen like atom , is in excited state. It has a total energy of -3.4 eV, find the de-Broglie wavelength of the electron.

A

`6.6xx10^(-10)` m

B

`6.6xx10^(11)`m

C

`7.6xx10^(-11)`m

D

`7.6xx10^(-10)` m

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The correct Answer is:
A
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